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why not use atof float value = atof(principal); //if user entered text then the value = 0 //if the user entered neg number then the value < 0 if(value <= 0) { cout<<"Principal is NOT a Positive Number"<<endl; cin>>principal; }

Hey, I'm looking to build an Instant Message app simular to Trillian (it lets you use a bunch of different IM accounts). I'm wondering if anyone has dabled in the IM world and if so if they could give me a lead on at least where to start with the app. I'm assuming it uses sockets but I don't...

I'd actually go the other way. I'd have an app that runs on your system. Have the mail go to a specific account. Write a little mail application that collects all email sent to the account. When the app receives an email it would import it into the spreadsheet without you needing to press...

I need to print a pdf so I shell it to the adobe on my system. (seemed easiest). Problem is that when I shell a legal sized doc and my systems printer is set to do leter it adjusts the image and prints it at around 75% of normal so the image fits on the paper.. This is not acceptable. I am...

I am looking for a starting point. I've been tasked with learning how to use push technology to get a message to a palm. I'm in need of a tutorial/website/book that could help me learn how to do this. I have written several socket programs for the desktop and PPC and I've written several palm...